common: fix ansible location
common: fix ansible location

When deploying on arm64, common reports error:
stat /usr/bin/ansible: no such file or directory

The reason is ansible is installed to /usr/local/bin/ansible
rather that /usr/bin/ansible
Fix the issue to call ansible directly, to consider both cases.

Change-Id: Ie90bd9c4d7d3a4b7b0aef884351cb58ed13ebd11
Signed-off-by: Kevin Zhao <9fc648be98fc18cb4028b7c8c8516da572477616@linaro.org>
Signed-off-by: Zhangfei Gao <b1f7e1a0ab5f2fe9a6663bef87918f01828cf598@linaro.org>

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible